CodeMark: The Application Flow, and the One Decision That Sets the Bill

In a building required to be of Type A or B construction, external walls — the facade covering, the framing and the insulation — must be non-combustible under NCC 2025 Volume One Clause C2D10. The Deemed-to-Satisfy evidence is an AS 1530.1 test result from an Accredited Testing Laboratory, or the material being one of the items C2D10(5) deems non-combustible.

AS 5113 full-scale external wall classification testing is not a mandatory NCC requirement. It is referenced through Verification Method C1V3 as one acceptable Performance Solution route for limiting fire spread via external wall assemblies. If you take the Deemed-to-Satisfy path under C2D10, you do not need an AS 5113 test.

One more clause worth knowing before you design the system: under C2D15, externally located bonded laminated cladding panels in Type A or B construction must have all layers mechanically supported or restrained to the supporting frame. Chemical adhesion alone is not acceptable. A short list of products is exempt under C2D15(2) — laminated glass systems, layered plasterboard, fibrous-plaster sheet, fibre-reinforced cement sheeting, perforated gypsum lath, and garage-door components.

• Plumbing and drainage products go to WaterMark, not CodeMark. Routing them here is the single most common wrong-pathway mistake.
• Electrical and electronic equipment goes to RCM, and to EESS where the equipment is in scope.
• A building product already fully covered by a Deemed-to-Satisfy provision, where nobody in the supply chain is asking for independent certification, may not need CodeMark at all.
• CodeMark earns its keep when the product is innovative or non-traditional, when you want one nationally recognised mark instead of arguing state by state, or when the building certifier wants evidence for a Performance Solution.

1. 1Pre-assessment. Lock down the pathway, the applicable standards with their editions, the target NCC clauses and the scope — before spending anything on testing. Bring a one-to-two page product brief stating exact use and materials, your target states, any existing test reports, and an English technical data sheet. What you should get back is a scope statement, a standards list with editions, a test plan, a factory audit plan and a firm quote.
2. 2Testing. Confirm the current edition of every applicable standard first — an obsolete edition is a rejection, not a discussion. Use a NATA-accredited laboratory in Australia or an ILAC MRA-recognised one offshore, check whether any standard requires certifier-witnessed testing, and reserve budget for a re-test.
3. 3Document review and factory audit. The technical file wants test reports, quality-system documentation, a process flow with QC checkpoints, material data and supplier traceability, English installation instructions, and a declaration that the formulation is complete — no undisclosed fire retardants or stabilisers. The audit runs on-site at every manufacturing location.
4. 4Certificate issue and listing. Read the draft certificate’s scope statement word for word against the product variants, applications and limitations you actually intend to supply. Then verify your listing appears on the JAS-ANZ register.
5. 5Maintenance and surveillance. Annual surveillance re-checks that the quality system, process, materials and traceability still match the certified scope. Any change of formulation, substrate, adhesive, coating, factory location or requested NCC clause coverage needs an Extension of Scope before the changed product is sold.

Put those ranges next to the AS 5113 figure and the shape of the problem is clear: everything in the ordinary flow lives in the thousands to low tens of thousands. One avoidable test decision on an external wall product can exceed the entire rest of the programme.

• Settle the compliance path — Deemed-to-Satisfy or Performance Solution — in pre-assessment, in writing, before any test is commissioned. This is the highest-leverage hour in the whole project.
• Standard editions are a rejection trigger, not a formality. Get the edition list in writing from the certifier and hand that list to the laboratory.
• Every manufacturing location is audited on site, and offshore audits carry auditor travel. Declare all sites at application stage rather than after a certificate exists.
• The most common audit failure is not a broken process — it is floor staff who cannot describe the written procedure. Run an internal mock audit two weeks ahead and book a translator if English is not the site standard.